Hepatobiliary Surgery Practice Questions

Q: All of the following are associated with Caroli's disease, EXCEPT:

Biliary atresia. **Explanation:** **Caroli’s Disease** is a rare congenital disorder characterized by multifocal, segmental saccular dilatation of the large intrahepatic bile ducts. It is classified as a **Todani Type V choledochal cyst**. **Why Biliary Atresia is the Correct Answer:** Biliary atresia involves the fibro-obliterative destruction of the extrahepatic biliary tree, leading to obstruction. In contrast, Caroli’s disease is a condition of **ductal ectasia (dilatation)**. There is no established pathophysiological link between the two. Caroli’s disease is more commonly associated with **Autosomal Recessive Polycystic Kidney Disease (ARPKD)** and congenital hepatic fibrosis (known as Caroli’s Syndrome). **Analysis of Incorrect Options:** * **Biliary Lithiasis:** Stasis of bile within the dilated intrahepatic saccules leads to the formation of "sludge" and hepatolithiasis (intrahepatic stones) in up to 95% of patients. * **Biliary Abscess:** Recurrent bouts of bacterial cholangitis due to bile stasis and stone formation frequently progress to the formation of multiple intrahepatic biliary abscesses. * **Cholangiocarcinoma:** Chronic inflammation and irritation of the biliary epithelium pose a significant premalignant risk. Patients with Caroli’s disease have a 7–15% lifetime risk of developing cholangiocarcinoma. **NEET-PG High-Yield Pearls:** * **Genetics:** Associated with the **PKHD1** gene mutation. * **Imaging Gold Standard:** MRCP is the investigation of choice; it shows the **"Central Dot Sign"** (portal vein branches surrounded by dilated bile ducts) on CT/MRI. * **Classification:** Caroli’s Disease (limited to bile ducts) vs. Caroli’s Syndrome (bile duct dilatation + congenital hepatic fibrosis/portal hypertension). * **Treatment:** Localized disease is treated with lobectomy; diffuse disease requires liver transplantation.

Q: What is the investigation of choice for choledochal cyst?

MRCP. **Explanation:** **Choledochal cysts** are congenital cystic dilatations of the biliary tree. The primary goal of imaging is to delineate the anatomy of the cyst, its extent, and the presence of an **Anomalous Pancreaticobiliary Duct Junction (APBDJ)**, which is frequently associated with this condition. * **Why MRCP is the Investigation of Choice (IOC):** Magnetic Resonance Cholangiopancreatography (MRCP) is a non-invasive, radiation-free modality that provides excellent anatomical detail of the entire biliary tree and pancreatic duct. It has a high sensitivity for detecting APBDJ and is preferred over invasive methods, especially in the pediatric population. **Analysis of Other Options:** * **USG (Ultrasound):** This is the **initial/screening investigation**. While it can detect a cyst, it is operator-dependent and often fails to visualize the distal common bile duct or the pancreaticobiliary junction clearly. * **ERCP (Endoscopic Retrograde Cholangiopancreatography):** Historically the "gold standard" for biliary anatomy, it is now reserved for **therapeutic interventions** (e.g., stone removal or stenting) due to its invasive nature and risks like pancreatitis. * **Graham Cole’s Test:** An obsolete oral cholecystography technique used historically to visualize the gallbladder; it has no role in modern biliary imaging. **High-Yield Clinical Pearls for NEET-PG:** * **Classification:** Todani’s Classification (Type I is the most common; Type V is Caroli’s Disease). * **Classic Triad:** Jaundice, right upper quadrant pain, and a palpable mass (seen in only 20% of cases). * **Treatment:** Complete surgical excision of the cyst with **Roux-en-Y Hepaticojejunostomy** (to prevent the high risk of cholangiocarcinoma). * **Gold Standard:** While MRCP is the IOC, **Intraoperative Cholangiography (IOC)** remains the most definitive way to define anatomy during surgery.

Q: Which of the following is the least common presentation of Hepatocellular Carcinoma (HCC)?

Pyrexia of Unknown Origin (PUO). **Explanation:** Hepatocellular Carcinoma (HCC) typically arises in the background of chronic liver disease or cirrhosis. While it can present with a wide array of symptoms, **Pyrexia of Unknown Origin (PUO)** is considered the **least common** presentation among the options provided. 1. **Why PUO is the correct answer:** Fever in HCC is usually a paraneoplastic manifestation or due to tumor necrosis. While it occurs in approximately 10–15% of cases, it is rarely the *sole* or primary presenting feature (PUO). Most patients present with more overt signs of malignancy or liver decompensation before a fever workup is initiated. 2. **Analysis of Incorrect Options:** * **Abdominal Mass:** This is a very common presentation, especially in non-cirrhotic patients or in regions where screening is not routine. A palpable, firm, irregular liver mass is a classic finding. * **Jaundice:** This occurs frequently due to underlying cirrhosis, biliary obstruction by the tumor, or extensive replacement of the liver parenchyma. * **Weakness:** General constitutional symptoms like fatigue, weight loss, and anorexia are the most common non-specific complaints in patients with any advanced malignancy, including HCC. **Clinical Pearls for NEET-PG:** * **Most common presentation:** Abdominal pain (right upper quadrant) and weight loss. * **Most common site of metastasis:** Lungs (hematogenous spread). * **Tumor Marker:** Alpha-fetoprotein (AFP) >400 ng/mL is highly suggestive, but it can be normal in up to 30% of cases. * **Triad of HCC:** Rapidly enlarging liver, ascites (often blood-stained), and RUQ pain. * **Auscultation:** A **bruit or friction rub** over the liver is a high-yield physical sign specific to HCC.

Q: What is the recommended timing for performing cholangiography with a T-tube after cholecystectomy?

7-10 days. **Explanation:** The correct timing for a postoperative T-tube cholangiogram is **7–10 days** after surgery. The primary medical rationale for this delay is to allow sufficient time for the **maturation of the fibrous tract** around the T-tube. If the tube is manipulated or if contrast is injected under pressure too early, there is a significant risk of bile leakage into the peritoneal cavity, leading to biliary peritonitis. By day 7–10, the tract is usually well-formed, and any residual stones in the common bile duct (CBD) can be safely identified before the tube is considered for removal. **Analysis of Options:** * **Option A (1-5 days):** Too early. The fibrous tract is immature, and the risk of bile leak is high. Additionally, postoperative edema at the Ampulla of Vater may still be present, leading to false-positive results (mimicking a stone). * **Option C & D (10-20 days):** While a cholangiogram can be performed during this window, it is not the *standard recommended timing*. Waiting until 14–21 days is typically reserved for the actual **removal** of the T-tube (to ensure a very firm tract), but the diagnostic imaging is ideally done sooner (day 7–10) to plan further management. **NEET-PG High-Yield Pearls:** * **Indications for T-tube:** Placed after a Common Bile Duct Exploration (CBDE) to provide drainage and a route for postoperative imaging. * **The "Water Test":** Before removing a T-tube, it is often clamped for 24 hours. If the patient develops pain or jaundice, it suggests distal obstruction (retained stone). * **Retained Stones:** If the cholangiogram shows a stone, the T-tube is left in place for **4–6 weeks** to allow the tract to mature enough for **Burhenne’s technique** (percutaneous stone extraction via the T-tube tract).

Q: The image shows stones found in the gall bladder. Which of the following conditions is associated with their formation?

All of the above. ***All of the above*** - All three mechanisms work synergistically in **cholesterol gallstone formation**: **bile stasis** from hypomotility, **nucleation** of cholesterol crystals, and **mucus hypersecretion** as a scaffold. - The pathogenesis involves **Admirand's triangle** disruption (cholesterol supersaturation) combined with these promoting factors leading to stone precipitation. *Hypomotility of gall bladder* - **Bile stasis** from reduced gallbladder contractility allows prolonged contact time for cholesterol precipitation and crystal growth. - While contributory, this alone is insufficient without **cholesterol supersaturation** and nucleating factors for stone formation. *Accelerated cholesterol crystal nucleation* - **Nucleation** is the initial step where cholesterol crystals form from supersaturated bile, but requires additional factors for stone development. - This process alone cannot sustain **stone growth** without bile stasis and mucus glycoproteins acting as a binding matrix. *Hypersecretion of mucus* - **Mucus glycoproteins** provide a nucleating scaffold and binding matrix essential for cholesterol crystal aggregation and stone formation. - Although crucial for stone development, mucus hypersecretion requires **cholesterol supersaturation** and stasis to be pathologically significant.

Question 1

All of the following are associated with Caroli's disease, EXCEPT:

Accepted Answer

Biliary atresia

Answer

Cholangiocarcinoma

Answer

Biliary lithiasis

Answer

Biliary abscess

Question 2

Bile strictures are most commonly seen in which of the following conditions?

Accepted Answer

Cholelithiasis

Answer

Malignancy

Answer

Post-operative state

Answer

Worm infestation

Question 3

What is the best treatment for refractory ascites?

Accepted Answer

Transjugular intrahepatic portosystemic shunt (TIPS)

Answer

Atriovenous shunt

Answer

Furosemide with low-volume paracentesis

Answer

Distal splenorenal shunt

Question 4

What is the investigation of choice for choledochal cyst?

Accepted Answer

MRCP

Answer

Graham chole's test

Answer

ERCP

Answer

USG

Question 5

Mirizzi syndrome is characterized by all the following except:

Accepted Answer

Obstructive jaundice

Answer

Gallstone ulcerating into the common duct

Answer

Impacted stone in the cystic duct

Answer

Severe pericholecystic inflammation

Question 6

Which of the following is a known complication of a choledochal cyst?

Accepted Answer

Malignant transformation into carcinoma is a potential complication of choledochal cysts.

Answer

Choledochal cysts primarily manifest in adulthood.

Answer

Surgical excision of choledochal cysts is rarely performed.

Answer

Choledochal cysts typically present with rapidly progressing jaundice.

Question 7

Which part of the intrahepatic bile duct is involved in Type 2 cholangiocarcinoma?

Accepted Answer

Division of both ducts and not extending outside

Answer

Common hepatic duct only

Answer

Secondary hepatic ducts

Answer

Extends beyond hilum

Question 8

Which of the following is the least common presentation of Hepatocellular Carcinoma (HCC)?

Accepted Answer

Pyrexia of Unknown Origin (PUO)

Answer

Abdominal Mass

Answer

Jaundice

Answer

Weakness

Question 9

What is the recommended timing for performing cholangiography with a T-tube after cholecystectomy?

Accepted Answer

7-10 days

Answer

1-5 days

Answer

10-14 days

Answer

15-20 days

Question 10

The image shows stones found in the gall bladder. Which of the following conditions is associated with their formation?

Accepted Answer

All of the above

Answer

Hypomotility of gall bladder

Answer

Accelerated cholesterol crystal nucleation

Answer

Hypersecretion of mucus

Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery — MCQs

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